RX-93ff Nu Gundam
This is a variant of the Nu Gundam. Its most distinctive feature is the "Long-Range Fin Funnel," a long-range weapon proposed by Anaheim Electronics, mounted on its back.
The unit is painted in tricolor.
Long-Range Fin Funnel
A large Psycommu weapon terminal mounted on the left back. The beam cannon is surrounded on all four sides by release barrels, which deploy when firing, creating a gap. In addition to being used as a remote attack terminal like conventional funnels, it can also be used for long-range sniping while connected to the back, or as a large beam saber when attached to the arm.

RX-93ff ν Gundam & Long Range Fin Funnels | Gizmogwai76's Gunpla works